TY  - BOOK
AU  - Danielson,G.L.
AU  - Walker,R.S.
TI  - Radio and line transmission 2
SN  - 0592000672
U1  - TK/5101 
PY  - 1972///
CY  - London
PB  - Butterworth.
KW  - Communication- radio and telecommunication
ER  -